Flushing-valve.



W. H. BOWMAN.

.ILUSHING VALVE.

AYPLIOATIOH FILED JULY 24, 1907.

9&1 584;, Patented Oct. 20, 1908.

slum/"Iron 6 Round;

UNITED STATES Specification of new. Patent.

ranted Oct. 20, I908.

Applioation flled July-24, 1901f. Serial 113,885,290.

To all whom it may concern:

Be it known that I, WALTER H. BOWMAN, a cltizen o f the'United States, residing at lmhurst, In the county of Dupage and State of Illinois, have invented new and use ful 'Im rovements in Flushin valves, of which t e-following is a speci cation.

The object of my invention is the provision of a valve mechanism for use in flushing urinals, closets, etc., and for otherurposes, which, when positively started Into operation, will discharge -a predetermined quantity of fluid and then automatically close; said mechanism to be adapted 'for freely discharging at the outlet all the fluid whic can pass at the delivery inlet.

A further object is the provision of a mech anism which shall be of simple construction, cheap in first cost, comparatively light in weig t, and not liable to become deranged and hence inoperative, and'which will effectively and with certainty perform the desired functions.

With these ends in view, my invention consists in certain novelties of construction and combinations of parts hereinafter set forth and claimed. I

The accompanying drawing illustrates an example of the physical embodiment of the Invention constructed according to the best mode I have so far devised for the practical application of the principle.

igure 1 is a top plan view of the valve mechanism. Fig. 2 1s a vertical section in elevation taken on line a:'a@ of Fig. 1.

Referring to the figures, the numeral 1 designates a hollow casting constituting a main cylinder provided with a top open end bounded by a flange 2, an inlet pipe or delivery inlet 3 adapted delivery pipe, and an upwardly or inwardly extending cylindrical wall 4 which projects into the interior of the main 0 I linder, forming asecondary cylinder and with its top open end located above the delivery inlet pipe 3. The top end of the main cylinder iscl-osed by a cap 5 through the medium of bolts 6 passed through the outer edge of the cap and the flange 2 of the cylinder. Within the body'of the cap is a vertical passage 7 which connects with a horizontal passage 8, and the latter opens into an enlarged cylindrlcal opening 9 which is in-communication to be engaged by a with the interior of opening 10 in the wall, as shown.

The. numeral 11" designates the starting valve as a whole comprising a stem 12, piston 13, plug 14, push button 15, gland 16, packings 17 and 18, retracting spring 19, and a guide flange 20. The gland has a chamber 21 at its inner end which comma nicates with a pipe 22 by a passage 23 extending through the cap and flange of the main cylinder. Screwed into the interior of the cylindrical wall 4 at the lower end. is a discharge outlet pipe 24 and within this pipe is located an inverted cup- 25, as shown. The outer surface of the cup at the lower edge 26 is curved and the pipe 24 adjacent thereto is reduced in diameter and provided with a curved inner surface 25' so that the descending current of water will entirely surround the cup and cause a vacuum in the same and also in the pipe 22, which at its lower end passes through the walls of the pipe 24 and the inverted cup. Located within the main cylinder is a-piston 26 of any suitable construction with a packing 27 I which engages the top edge of the wall 4 and also has a stem 28- guided by a hole in the spider 29 fixed upon the interior of the wall. Pivoted to the under surface of the top cap by a perforated lug 30 is a trigger or lever 31, the short arm of the lever being provided with a catch 32 having a beveled surface 33 over which the piston 13 can ride, and the long arm 34 of the lever extending obliquely downward into themain cylinder,

Where it can be engaged by the main piston 26 when it ascends. 'A pipe 35 at one end connects with the passage 7 in the cap and the other end passes through the wall of the delivery inlet pipe; This pipe 35 is closed atthe lower end and has an opening 36 in the wall near the end adapted to freely receive water from the inwardly moving current. The main piston divides the interior of the cylinder into two chambers A and B.

The modus operandi is as follows: Assuming the several parts to occupy the relative positions shown by Fig. 2 and the chambers A and B tq'be filled with water and it is desired to discharge a determined quantity of water or other fluidi the starting valvestem 12 is pushed inwardly till the piston 13 passes over the catch 32, where it is held the main cylinder by an I and the plug 14 enters and closes the passage 8'so water cannot enter. This action opens the chamber 21 in the gland so water from the chamber B above the main piston can flow by way of the pipe 22 to the inverted cup and the discharge outlet pipe. Pressure being reduced above the main piston, the water pressure-in chamber A forces the pis ton upwardly, which allows the discharge of water from the chamber A, and as it passes downwardly around the inverted cup it creates a vacuum therein and also in the pipe and facilitates the flow of water from above the main piston through the said pipe 22, as is. obvious. When the main piston strikes the long arm of the lever in ascending the short arm is lowered, releasing the piston and stem of the starting valve so that the spring can draw the plug out of the passage 8 andallow water to enter the chamber B'by way of the pipe 35. The main piston now descends and closes the opening to the fulfils all the conditions set forth as the endand purpose of my invention.

What I claim is:

1. A valve mechanism having a main cylinder with a delivery inlet and a discharge outlet, a main piston dividing the cylinder into two chambers, a passage for introducing fluid from the delivery inlet to the chamber back of the piston, a passage from the chamber back of the piston to the discharge outlet,,means for closing the passage from the delivery inlet to the said chamber, means for opening the passage from the said chamber to the discharge outlet, and means operated by the movement'of the main piston for closing the passage from the chamber to the discharge outlet and opening the passage from the delivery inlet to the chamber.

2. A valve mechanism having a main cylinder with a delivery inlet and adischarge outlet, a main piston dividing the cylinder .vinto two chambers, a passage from the, delivery inlet to the chamber back of the piston, a passage from the chamber to the dischar e outlet, a starting valve for simultaneous y closing the passage from the delivery inlet to the chamber back of the piston and opening the passage from the said chamber to the discharge outlet, and means for holding the starting valve open and releasing it to closewhen said means for holding the starting valve open is engaged and moved by the piston in its upward travel.

. 3. A valve mechanism having a main cylinder with a delivery inlet and a discharge I outlet, the latter provided with an inverted cup, a main piston dividing the cylinder intotwoachambers, a passage from the delivery inlet to the chamber back of the piston, a passage from the chamber back of the piston to the inverted cup connected with the discharge outlet, and movable means for simultaneously closing the passage from the delivery inlet to the chamber back of the piston and opening the passage from'said chamber to the discharge outlet.

4. A valve mechanism having a main, cylinder with'an upwardly projecting cylindrical wall4, the top edge thereof constituting a seat for a piston; ajdeliveryi n'let and] a discharge'outlet; a sigle pistonwith a stem, said piston normally dividing the main cylinder into'two' chambers and seated upon the drical wall 4 engaging and guiding the piston stem;a passage from the delivery inlet to the chamber back 'of the piston; a passage from the said chamber to the discharge outlet; a starting valve; means for holding the starting valve open, and means operated by the movement of the main piston for releasing the starting valve and allowing it to close.

5. A valve mechanism having a main cylinder with a delivery inlet and a discharge outlet, a main piston dividing the cylinder into two chambers, a passage, from the delivery inlet to the chamber back of the piston, a passage from the said chamber to the discharge outlet, means for controlling the flow of liquid through the said two passages, and means in connection with the discharge outlet for creating 'a partial vacuum in the passage from the chamber back of the piston to the discharge outlet when the main piston is moved away from its seat and fluid is being discharged.

6. A valve mechanism having acylinder with a delivery inlet and a discharge outlet, a piston dividing the cylinder into two cham bers, a passage from the delivery inlet to the edge of the wall 4; means within the cylinchamber back of the pistbn, a passage from the said chamber to the discharge outlet, a starting valve provided with a reciprocating stem and piston, ,and a pivoted lever with a catch adapted to engage the'piston of the starting valve and also having an arm which is adapted to be moved by the main piston and release the piston of the starting valve from the catch.

.7. A valve mechanism having a cylinder with a delivery inlet and a discharge outlet, a piston dividing the cylinder into two chambers, a passage from the delivery inlet to the chamber back 0 the piston, a passage from the said chamber to the discharge outlet, :1 starting valve Which in one position closes the passage from the chamber back vof the piston to the discharge outlet and in another position opens said passage and closes the passage from the delivery inlet 'to the said chamber, and a pivoted lever adapted to hold the valve open and to release the same upon beingengaged by the main piston in 10 its movement.

In testimony whereof I aflix my signature in presence of two Witnesses.

WALTER H. BOWMAN.

WVitnesses G. H. FRANZEN, F. W. M. HAMMERSCHMIDT. 

